Bronzing-machine.



M. SMITH.

BRONZING MACHINE.

APPLICATION FILED NOV-24.1911

Patented Oct. 19, 1915.

fizvehtar: 74!

m'fnesses 972%.,

nnrrnn s ra'rns PATENT carton MARK SMITH, OF SiII'UTlIHIv BEDDISH, NEAR STOGKPORT, ENGLAND, ASSIGNOR T TAYLOR, 'GARNETT, EVANS & COMPANY LIMITED, 0]? MANCHESTER, ENGLAND.

BRONZING-MACHINE.

Patented Oct. 19, 1915.

Application filed November 24,1911. Serial No. 662,116.

T 0 all whom it may concern:

Be itknown that 1, MARK SMITH, a subject of the King of Great Britain and Ireland, and a resident of South Reddish, near ,Stockport, England, have invented new and useful Improvements in Bronzing-Machines,

of which the following is a specification.

This invention. relates to bronzing machines of that type in which the bronze powder'is applied by handby an operative to a printed sheet and in which the sheet with the bronze powder so applied is then polished between suitable burnishing rollers while it is held by the same'or another operative.

Theobjects of my present invention are to so construct and arrange the different parts'of such a machine and to so provide them with suitable accessories that the bronze dust is prevented from escapingv into the room in which the operatives areworking by means of air exhaustion set up in or through such machine, and to provide a single source of power which may be of any suitable type and by means of which both the air exhauster and the burnishing rollers are driven. The air charged with the bronze powder and dustwhich is withdrawn from the operating parts of the machine may, as is already well known in connection with like exhaustion from other types of bronzing machines, be discharged at any suitable oint outside the room or may be discharged into a suitable separator in direct communication with the machine, which separator will effect the separation of the bronze powder from the air and return it to the machinefor re-use, the air being permitted to escape.

The accompanying drawings illustrate the construction of the improved machine.

Figure 1 shows it partly in front elevation and partly in longitudinal vertical section. Fig. 2 shows it in vertical cross section along the line m-@ Fig. 1, certain parts which are in front of the plane of view being indicated'in dotted lines. Fig. 3 is a view of a horizontal section taken at irregular heights through the upper part of the machine.

The machine comprises a chamber A which extends the full length of the machine above the table B between the two ends C C The upper part of this chamber is formed as a hood D with glass 13 through which the operator can see how the work is progressing. The space between the bottom edge D of the hood and the table B permits the workers arms to pass into the machine at any point along the table.

E is a shade to prevent reflectionof light and thus enable'the operator to see clearly I through the glass.

From the feed table B which is outside the machine to the left, the operator draws into the left hand part of the machine through a slot'G in the end wall C of the machine asheet properly prepared to have bronze powder applied to it. The operator takes bronze powder from'a suitable recep tacle, such for example as the box ordrawer F,"and applies it to the sheet as is usual. I

The position of the sheet during the application of the bronze is indicated by the dotted square 2 in Fig. 3; the dotted square 1 indicates the position of the sheet upon the feed table outside the machine. bronze has been properly applied the sheet is moved to the right and is passed between the burnishing rollers G G One of its positions during the burnishing operation is indicated by the dotted square 3, Fig. 3. After it has been burnished the sheet is preferably laid on a shelf H forming the floor of a chamber above and behind the burnishing rollers and from which shelf accumulated sheets can be removed when desired through the door H Air from the workroom is compelled to enter the machine through the whole of the opening which extends along the machine above the front of the table B and this entrance of air prevents dust coming out of such opening into the workroom. The desired air current is set up by the fan J or like air exhauster situated in the back of the machine and driven by the same source of power as drives the burnishing rollers.

K is a suction chamber from which the fan illustrated directly exhausts, and this chamber is in communication with the op-' erative chamber through holes L L and with the chamber in which the burnishing rollers are contained through openings and trunk N. Any other part of the machine, as for example the chamber in which the finished sheets are placed, may be similarly in communication with the suction chamber through suitable openings and When the with the burnishing rollers.

trifugal air fan J. Through suitable gearing P the motion of the fanshaft, properly reduced in speed if necessar ,is transmitted to the burnishing rollers. v

R indicates an adjusting device'of construction well known in connection with burnishing rollers for adjusting them rela tively to one another.

' The electro-motor 0 may be replaced by any other prime mover, or it may consist of a pulley or other element of gearing driven from outside the machine but similarly adapted to drive both the fan and" the burnishing rollers, Whatever the form of motor or driving element employed, there may be'inserted at a suitable partiof the gearinjg v lutch or like disconnectible device so that-the fan can -be started,i f desired, Without the burnishing rollers conunencing ito revolve. This disconnectible device may be one of the gear wheels P which maybe i slidden'alongiits shaft into-or out of gear In themachine illustrated the I shown as discharging the air and suspend ed bronze'dust through the pipe '8 into the centrifugal separator T, from the upper part of which the air escapes while thepowder falls to the lowerpart and is fed to a receptacle F within the machine. This re ceptacle'may be. a two compartment drawer F, Fig. 2, the back compartment of which,

when in use, comes under the opening'of the separator. When this back compartment filled from the separator,

fan" is" discharge the draweris withdrawn'and reversed, the

original front and empty compartment being put under theseparator: tOxbe filled,

while the now full/and front compartment is being emptied by' the operator.

ment and. used up any further excess of 1 powder required. while-the back comparte ment is filling, the drawer is again reversed and this operation is-repeated.

A bronzing machlne compr1s1ngan 1nclosed chamber, a table extending across the frontlower portion of said chamber. upon' When Y the operatorhas emptied thefront' compartwhich the bronze is adapted to be applied by hand'to a flat sheet, power actuated burj nishing rollers in another part of said chamber adjacent to but behind said table, a feed Wall having a slotitherei'n' through which a a i flat sheet may be drawn into the chamber,

saidfront wall of said chamber having a longitudinally disposed opening therein extending the length of the chamber and of dimenj sion's to permit the arms of the operative'to enter to manipulatevthesheet withinthe r chamber, a transparent top for apart' of said chamber providing opening through whichathe operative 'may observe the work within 'the chamb er, an air suc} t1on device 1n communlcatlon with said chamber, and means for driving said air suction' deviceand burnishing rollers."

witnesses. V i

' MARK'SM ITH,- Witnesses p L 7 WILLIAM GEobHErs,

JOHN OU NNELL;

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner offfatents, -Wa.shin'gton;1).0." v

7 In witness whereof I have hereun'to set my hand in the presence of two subscribing 

